empathy - video/audio calls broken?

[Daniel Pocock <daniel@pocock.com.au>]

Are other people having trouble with empathy recently?

- about 8 months ago, I found the version in testing would not interact
with the version in squeeze

- about 3 months ago, I found it had improved a lot

- now, I find two users on the same LAN using the latest version from
wheezy can't call each other

All my testing is via an ejabberd server on squeeze

Empathy is part of the default desktop, it is the default IM client, so
while this may not be technically a serious bug (users who only want
chat are OK), it appears to be a nasty regression and it could affect
many users.